Back to results
US 10,271,538 B2Granted
Device for dispensing volatile substances with variable mat structures
AssigneeThermacell Repellents, Inc.
InventorsStephen J. Shapiro, Wender Wang
Life of this patent
Estimating the term…
Abstract
Mats of different sizes formed of single mats having different sizes or a multilayer mat which are provided for area insect repellent devices which contain a heat plate to heat the mat structures carried thereabove, thereby providing different operating characteristics of the repellent device.
Claims4
A portable area insect repellent device having a housing for variable thickness mats, said insect repellent device comprising:
- a source of heat and a heating plate, a mat located above said heating plate
- and a grill located above said mat,
- said mat carrying volatilizable material to be heated and dispensed to create an insect repellent area,
- said housing comprising a floor and a heat box having an underside:
- an adjustable compartment comprising said heating plate
- and said grill comprising the top of said adjustable compartment;
- and
- the underside of said heat box being vertically adjustable to adjust the size of said adjustable compartment, said adjustable compartment accommodating mats of different sizes, the size of said adjustable compartment being manually controlled by a user,
- springs connected between said underside of said heat box and the floor of said housing of said device,
- said springs vertically adjusting the space in said adjustable compartment,
- said springs being biased pushing upwardly on said heat box.
8 more elements
Dependencies are inferred from the claim text.